Dear Michael:
LG 900 is CO2 laser engraving machine, it is 60w laser power and better for engraving. It will have a more accurate resolution for engraving.
LC 6090 is CO2 laser cutting machine, it is 80w laser power and better for cutting. The mechanical design is different from LG900. You will have fast speed when cutting.
So you can choose the machine according to the usage of the machine.
Linda
Jinan G.Weike Science&Technology Co.,LTd
wanmeisuccess@hotmail.com